ICD-10 Code F13.121 – Sedative, hypnotic or anxiolytic abuse with intoxication delirium (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F13.121 – Sedative, hypnotic or anxiolytic abuse with intoxication delirium
What it is
This code identifies abuse of sedative, hypnotic, or anxiolytic substances with delirium occurring during intoxication. Use it when the record shows both harmful use and an acute delirious state linked to the drug.
Clinical signs
Delirium may present with confusion, disorientation, impaired attention, and fluctuating awareness. Clinical features vary; refer to documentation for the substance involved and the delirium diagnosis.
When to use this code
Use this code when the provider documents sedative, hypnotic, or anxiolytic abuse and specifically links intoxication to delirium. It may apply in emergency, inpatient, or behavioral health records where the substance and mental status change are both stated. Check documentation if the chart only notes intoxication, misuse, or altered mental status without delirium.
Do not use for
Do not use it for dependence, uncomplicated intoxication, or withdrawal without delirium. Do not assign it when the substance class or the delirium relationship is not documented.
Coding tip
Confirm that “abuse” and “intoxication delirium” are both documented before assigning F13.121.